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Please share your thoughts about dgx 660 and havian 30.- Which one is better...- Does Havian 30 have a Microphone input jack as well?- Which one is more User Friendly?- If you have any other product in mind please suggest.

I have a Havian 30 that I like well enough. The action is not as crisp and clean as I'd like, and I don't love the sounds of the pianos although they are tweakable. But I like the arranger part of the keyboard very much. There are twice as many accompaniments as other arrangers, and you can download lots more. It's got an editable songbook and a usb in/out. I can load backing tracks on a usb and play along. I wish it had midi in/out but I can live without it. It also does not have line in/out. You have to use the headphone jack to hook up monitors. The Havian is now 3 or 4 years old I think and I don't think Korg has plans to upgrade it or replace it with something similar.

I had a predecessor to the 660. Honestly, it was okay as an arranger. I liked the yamaha pianos and many of the "sweet" and "cool" voices. It probably was a little more user friendly. However, when you split the keyboard into a left hand and a right hand different voice, the sustain function did not work in the left hand. I was told the feature was not available for the lower models and yamaha did not understand why I would want a left hand sustain anyway. It was a deal breaker for me at the time and I quickly sold it and went on to something else. I don't remember if it had a mic in but you could pull the manual off the web and take a look through it.

I like some of the Kurzweil arrangers -- you might take a look at some of those. If you're looking specifically for an arranger, the casio px3XX series are getting better and better. If you don't care about 88 weighted keys, there are tons of good arrangers. Try Roland too.

I had a predecessor to the 660...when you split the keyboard into a left hand and a right hand different voice, the sustain function did not work in the left hand. I was told the feature was not available for the lower models and yamaha did not understand why I would want a left hand sustain anyway.

Some low end models sustain both sides of a split, some only sustain the right side, which is what you'd typically want when you're playing LH bass. Since LH bass is such a common use for split, if you're going to only have one, most people would probably prefer that one. But as you get to fancier models, you get the option to choose which you want, even altering the behavior on a patch-by-patch basis.